04-13-2013, 02:41 PM
I can easily turn or mill steels at 50 to 55Rc with the coated carbide tooling I have. Is it expensive? Not if you know what to buy and how to shop for it.
At hardness above that I have a CBN (cubic boron nitride) insert for turning that can handle over 70Rc. For flat surfaces, I have a surface grinder that makes all but the softest, non-magnetic materials cut like butter. ;)
At hardness above that I have a CBN (cubic boron nitride) insert for turning that can handle over 70Rc. For flat surfaces, I have a surface grinder that makes all but the softest, non-magnetic materials cut like butter. ;)